25869880 has 32 divisors (see below), whose sum is σ = 58663440. Its totient is φ = 10266880.

The previous prime is 25869859. The next prime is 25869889. The reversal of 25869880 is 8896852.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25869880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25869889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2772 + ... + 7708.

Almost surely, 2^25869880 is an apocalyptic number.

25869880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25869880 is an abundant number, since it is smaller than the sum of its proper divisors (32793560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25869880 is a wasteful number, since it uses less digits than its factorization.

25869880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079 (or 5075 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 25869880 is about 5086.2441939018. The cubic root of 25869880 is about 295.7545749920.

The spelling of 25869880 in words is "twenty-five million, eight hundred sixty-nine thousand, eight hundred eighty".